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Updated: Aug 2, 2026

Murine Prostate Micro-dissection and Surgical Castration
Published on: May 11, 2016
The androgen insensitive micropenis: long-term follow-up into adulthood
1Department of Urology, The Mayo Clinic, Rochester, MN 55905, USA. dhusmann@mayo.edu
Aim:
To assess the adult stretched penile length (SPL) and sexuality in patients with micropenis who exhibited an inadequate response to exogenous testosterone therapy and were raised as males.
Patients And Methods:
Patients with micropenis who had an equivocal response to exogenous testosterone therapy and were raised as males were evaluated at adulthood (>17 yr).
Results And Conclusions:
Twenty patients with micropenis, initial median SPL -3.3 SD below the mean (range -5.5 to -2.6) had a suboptimal response to initial testosterone therapy, median SPL post-treatment -2.7 SD (-3.3 to -2.2), and were raised as males. At adulthood, 90% (18/20) had a micropenis, median SPL -3.4 (-5.9 to -2.2). All have a male gender identity, five are undergoing psychiatric counseling (fear of sexual rejection--five patients, one of whom also has suicidal ideation). Eight have not pursued a sexual relationship; 12 are sexually active, one of whom is bisexual.

